/*
 * Copyright (C) 2019~2021 dinstone<dinstone@163.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dinstone.agate.gateway.handler;

import com.dinstone.agate.gateway.options.ApiOptions;
import com.dinstone.agate.gateway.spi.BeforeHandler;

import brave.Span;
import io.vertx.ext.web.RoutingContext;
import io.vertx.tracing.zipkin.ZipkinTracer;

public class ZipkinTracingHandler implements BeforeHandler {

    private ApiOptions apiOptions;

    public ZipkinTracingHandler(ApiOptions apiOptions) {
        this.apiOptions = apiOptions;
    }

    @Override
    public void handle(RoutingContext context) {
        Span activeSpan = ZipkinTracer.activeSpan();
        if (activeSpan != null) {
            activeSpan.tag("api.name", apiOptions.getApiName()).tag("gateway", apiOptions.getGateway());
        }
        context.next();
    }

}
